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Unknown Plant

Observed: 11th July 2011 By: Columbine
074 1

I have been trying to find out what this plant is for months and it has just flowered (see photo) It has a square hairy branched stem, and has now grown to about 4 feet high in places, It has appeared on the edge of a field where the ground was cleared of bramble and H balsam last year

Species interactions

No interactions present.

Species with which Common Hemp-nettle (Galeopsis tetrahit) interacts